Statistics - confidence interval?The distribution of direct deposits into personal checking accounts at a certain regional bank is normal with mean, ?, and standard deviation ? = $207.50. Suppose a simple random sample of 36 deposits produced a sample mean of $801.76
a. based on the above information, find the 90% confidence interval for ?.
b. Is it true that 90% of the direct deposits will be amounts contained within the interval you produced above??
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